AR4PDHM3_A/H

Overview

The AR4PDHM3_A/H is a fast recovery avalanche rectifier from Vishay, designed for surface mount applications in the TO-277A (SMPC) package. It features a 200 V repetitive peak reverse voltage and supports a 4 A average forward current. The device exhibits a typical forward voltage of 1.02 V and a maximum surge current rating of 65 A. Key electrical characteristics include a reverse leakage current of 600 nA and a fast recovery time of 110 ns. It operates within a junction temperature range of -55 °C to +175 °C and holds AEC-Q101 qualification for automotive reliability.

Feature Summary

• Incorporates avalanche ruggedness to withstand transient energy events during switching operations.
• Utilizes oxide planar chip junction technology to ensure stable performance and low leakage currents.
• Fast recovery characteristics enable efficient operation in high-frequency power conversion circuits.

Applications

• Automotive electronics systems requiring AEC-Q101 qualified components
• High-frequency DC/DC converter output rectification
• Free-wheeling diode applications in inductive load circuits

Procurement Notes

Verify the specific suffix codes against official Vishay documentation to confirm exact packaging and tape-and-reel specifications. Ensure that the procurement channel provides valid traceability records for automotive-grade parts. Confirm RoHS compliance status and check for any recent product change notifications that may affect assembly parameters or material composition before finalizing orders.

Selection Notes

Select this component when designing circuits that require both fast switching speeds and avalanche capability in a compact surface-mount form factor. The TO-277A package offers a balance between thermal dissipation and board space efficiency. Consider the 110 ns recovery time for suitability in high-frequency topologies where standard rectifiers would introduce excessive losses or ringing.

Part Context

This part belongs to the AR4P series of fast recovery rectifiers manufactured by Vishay General Semiconductor. The series utilizes the eSMP package technology, which provides a low-profile solution suitable for automated placement. The AR4PDHM3_A/H variant specifically targets applications needing robust avalanche ratings alongside high-speed recovery characteristics in a single-diode configuration.

Replacement Considerations

Consult official Vishay substitution guides for verified equivalents. Generic replacements may not match the specific avalanche ruggedness or AEC-Q101 automotive qualification required for this application.